There's also the storage of heat in the ground, which may be obtained in other ways. That's where I was talking about boreholes in Hamilton. There's another perfect example in southern Alberta, in the Okotoks community.
We are looking at all energy sources, from the investigative, the scientific, perspective, as to what's available and the cost effectiveness. If you take a look at a map of Canada, the geothermal resources tend to reside in the area of the country you're talking about; it's not ubiquitous across the country. As a matter of fact, it sort of takes a sweep, going up the western side of the country through the Rockies and in that area.
There is not a simple solution or a one-size-fits-all. The depth to which you would need to drill to obtain the kind of heat that would make it cost effective...it would be lost in the drilling.